The Potential Father Notice may be served by publication (i.e. published in the newspaper) but only after diligent efforts to locate him have been made to serve him in person. A diligent effort means actively trying to find the father by following up on all leads. The notice, including his name and the mother’s, is published once a week for four consecutive weeks. His thirty days within which he must complete a paternity action starts after the fourth and last publication. If the mother does not know the father’s name then the publication names him as John Doe.